If "penultimate" means "next-to-outermost", the correct answer is 8: The innermost shell is full with two 1s electrons; the next-to-outermost shell is full with two 2s electrons and six 2p electrons, for a total of 8. The outermost shell has five valence electrons, constituting with the two inner shells the remainder of the proper number of total electrons for phosphorus, 15, its atomic number.
8 electrons present in penultimate shell
Electron shell of phosphorus has formula 2, 8, 5. This means that the first layer of its shell holds 2 electrons.
5
There are 5 electrons in outer most shell of phosphorus it belongs to v group of periodic table.5.its atomic number is 15
atomic number
8 electrons present in penultimate shell
Phosphorus has 10 more electrons. A neutral atom of phosphorus has 15 electrons, 3 in the outer 3p shell There are 5 electrons in a neutral atom of boron, 1 in the outer 2p shell.
Electron shell of phosphorus has formula 2, 8, 5. This means that the first layer of its shell holds 2 electrons.
The atomic number of phosphorus is 15.its electronic configuration is 2,8,5.outermost shell has 5 electrons. it can accommodate 3 more electrons to complete its octet.so its valency is 3. and it has 5 electrons on its valence shell.
5
There are 5 electrons in outer most shell of phosphorus it belongs to v group of periodic table.5.its atomic number is 15
atomic number
Phosphorous has 2 elements in K-shell, 8 in L-shell and 5 in M-shell.
There are 5, it is in group 5 on the periodic table of the elements
5 because it is in group 5 on the periodic table
the energy levels are as follows: first shell 2 second shell 8 third shell 5
Phosphorus has 3 shells. The outer shell contains 5 electrons. The electronic configuration is :- 1s2, 2s2, 2p6, 3s2, 3p3